Furnace front



AYTORNE'Y Mar. 27, 1923;

J. REID FURNACE FRONT' Filed'Aug. 4, 1920 4 sheets-,sheet 2 JNVLWTUR ATTURNEY @n m m E QN/ O Hm. wm mw N m u @Nv Mar.27,1923. 1,449,840

J. REID .FURNACE FRONT Filed Aug. 4, 1920 4 sheets-sheet 5 W8 v FM. 7

. INVE/VTR T TORNE'Y Mai. 27, 1923. 9,841)

J. RElD FURNACE FRONT Filed Aug. 4, 1920 4 sheets-sheet 4 INVENTOR f Patented Mar. 27, 1923.

" i Nr 'rie JOHN REID, or NEW YORK, N. Y.

FUENACE FRONT.

Application filed August 4, 1920. Serial No. 401,268.

To all whom t may con-@cfm Be it known thatl, JOHN REID, a subject of the King of Great Britain, and residing at 8O Church Street, in the city of New York, in the State of New York, in the United States of America, have invented new and useful Furnace Fronts, of which the following is the specification.

The invention relates to furnace fronts, as described in the present specifi-cation and illustrated in the accompanying drawings, that form partof the same.

The invention consists essentially o-f the novel means employed, whereby in the closures for the mouth of a furnace the air pocket formed by the back plate distanced from the front plate is so arranged in regard to openings in said plates as to accommodate the coal passing box or oil burning equipment particularly formed for the purpose.

The objects of the invention are to reduce the expense in the equipment of furnace particularly in marine installations; to improve the facilities for repairs and replacements; to insure a steady pressure in steam generating plants by promoting the combustion of the fuel; to afford ready access to the interior of the furnace in case of breakages in the structure or other unforeseen accidents or for inspection purposes at sea or in port, to eliminate the delays incident to furnishing new parts for replacements; and generally to provide an efficient serviceable and durable furnace front.

In the drawin s, Figure 1 is a vertical sectional view, s owing the frame of the front adaptable to `all purposes an'd also v show-ing -a coal passing boxinserted therein.

Figure .2 is asimilar view showing a fsimplefform of frame adapted for an oil burning equipment.

Figure 3 is .a vertical sectional View, showing a modification of the frame and an oil casing therein. v, l

Ffgure L1 is a vertical sectional view, illus# trating aform of oil burning equipment particularly .adaptableto a, simple frame.

Figure 5 is an elevation of the back plate and the intermediate parts in section inthe form of the inventionl illustrated in Figure 4.

Figure 6 is a perspective detail of the fan form of distributor.

Figure 9 is a modiiication ofthe fan distributor in a special construction for lnatural draft. i

Figure l0 is a vertical sectional View,

showing a further modiiication of the v fan form of distributor suitable for natural or.

forced draft as desired.

Figure 11 is a front elevation of the modifcation of the invention illustrated in Figure 10.

Like numerals of reference indicate co'rresponding parts in the gures rel-atingto the several forms of the invention respectively.

Referring to the drawings, in Figures 1 and 2 the front plate 1 is made with an opening 2 and the back plate 3 with a similar opening at though in Figure 3 the backv plate 5 is formed with a larger opening to accommodate a different form of air cyllnder. Thel front plate 1 also has a lower draft opening 7 closed by the ldoor 8 and in coal burning the back plate has -a lowery opening 9, which maybe closed by the plate 10-in oil burning.

' In coal burning lthe coal passing boX 11 having the sill 12 may be inserted between the openings l2 and L1.

The intermediate and distancing walls 13 and 14 extend from front plate 1 to back plate 3, and constitute the ash pit flare in coal burning and lower air pocket wall in oil burning, and to shield wall, in which' the valve 15 closes t e port in using forced draft.

' In Figures et, 5 and 6 the fan form of air distributor appears which is made up of the 4curved vanes 17 rigidly secured between the plate rings 18 and 19, the ring 18. being much narrower .radially than the ring 19,

thereby making it necessary to taper the vanes 17 from a point 20 approximately midway of their length to meet-the ring 1-8. The ring 19 is rigidly secured to the front plate 21 of the front 'and the vlanes 17 'eX- tend to the back plate 22, the ring 18 su.r.

rounding the 'opening 23 in the back vplate 22 and the ring 19 surrounding the opening 24 in thefront plate 21.

The flaring annular wall 25 extends from or about the point 2O of the vanes 17, and terminates in the flange surrounding the opening 23 and secured to the back plate 22 on the inner side, the other end of sald wall 25 forming a valve seat.

The cover plate 28 stands out from the front plate 2l in front of the opening 24 and is rigidly secured to said front plate by bars or brackets 29 leaving free openings for the entrance of air naturally between said cover plate 28 and the front plate 2l.

The cover plate 28 supports the oil pipe sleeve 30 and the valve 3l slides on the sleeve 30 and is operated by the rods 32. The valve 3l closes the opening 24 in the front plate 21, when forced draft is used and is drawn towards the cover plate 28 when natural draft is used, while in cutting olf forced draft it is pushed to the seat 27.

The lower pocket wall is curved around and between the front plate 2l and back plate 22 and suitably secured thereto. The shield wall 34 having the port 35 and valve 36 curves downwardly and is connected to the lower wall 33 by the side valves 37.

This with the burner and burner deflector 39 completes the oil burning equipment in this front and it will be seen that where natural draft is employed the air will enter between the cover plate 28 and the front plate 2l and will be drawnA through to the inside of the flaring annular wall 25 being further directed by the burner deflector 39 and reaching the flame beyond the burner.

In Figure 7 the annular wall 40 terminating in the flange 4l secured to the back plate 42 around the llame opening 43 is in cylindrical shape and encloses the tapered ends of the vanes 44, which are secured to the offset plate ring 45 and the plate ring 46 at the other ends, the former being secured to the back plate 42 and the latterbeing secured to the front plate 47 around the 0pening 48. rI`he cover plate 49, distanced from the front plate 47 and supported at intervals therefrom, supports the oil pipe sleeve, on which the valve 50 slides and is operated by the rods 5l, otherwise this form is the same as already described and the operation is similar.

In Figure 8 the same form of cylindrical annular wall is shown at 52 and this surrounds the vanes 53 held between "the offset plate ring 54, covering the tapered ends 55 of the vanes and secured to the back plate 56Varound the flame opening 57, and the plate ring 58 secured to the front plate 59 around the opening 60. The cover plate 61 standing out from the front plate 59 in front of the opening 60 is rigidly secured thereto by outwardly inclined vanes, which form a second ring of vanes in fan style for natural draft.

The cover plate supports the oil pipe sleeve 62 and a valve slides on the sleeve 62 and in regard to the other parts and the operation the description hereinbefore will answer the purpose of giving a clear explanation.

A somewhat different form is illustrated in Figure 9, though on the same general lines, however in this the vanes 63 are shaped to project the points 64 to the back plate 65 around the flame opening 66 and within the flaring annular wall 67 terminating in the flange 68 secured to said back plate 65, the plate ring 69 holding that end of the vanes 63 following the wall 67 and secured thereto. The vanes 63 widen out towards the front plate 70 and pass through a series of openings 7l and the extensions 72 of said vanes are held rigidly between side plate rings 73 and 74, the ring 73 being on the outer sides and the ring 74 being on the inner sides, the latter extending beyond the cover plate 75 having a corresponding series of openings 76, said cover plate supporting the oil pipe sleeve 77 and itself supported by the ring 7 3 to the outer side of the openings 76. An inner series of openings 78 are also made in the cover plate 75 within the longer plate ring 74, which register with the central opening 79 in the front plate 70 and the valve plate 8O slides on the ring 74 and on the oil pipe sleeve 77 and is formed with the extension 8l covering the openings 76, the inner plate portion of said valve covering the openings 78. To open the way for the inner openings 78 the central plate 82 is drawn from the plate 80 to uncover openings and the said plate 80 drawn out to the end of the ring 74 or the latter may have air openings therethrough.

The inner valve 83 slides on the oil pipe sleeve 77 between the front plate 7l and back plate 65 and closes up to the annular wall 67 and is drawn away therefrom by the rods 84. In this form of the front the outer and inner valve plates are drawn outwardly, the latter taking an intermediate position if natural draftis employed or an eXtreme outer position if forced draft is employed while the outer plate in the case of forced draft is moved in to bring the extension 8l over the openings 76. By this arrangement the fan form of air distributor is advantageously used for both natural and forced draft and in all courses the natural dra-ft air passes through the vanes.

In Figures 10 and 11 the vanes 85 are car ried by a frame 86, which also supports the oil pipe sleeve 87 The vanes are secured to a plate ring 88 at their inner tapered ends. which abuts the flaring wall 89 terminating in the deflecting annualr extension 90 adaptl ed to direct the air to the flame. The frame 86 supports the vanes 85 and said frame 86 stands out from the front plate 92 in front of theopening 93, each vane 85 being cut oil' to leave a valve chamber 94 in which the valve plate 95 operates by means of the handles 96 projecting through said frame.

The inner valve plate 95 operates' between the front plate 92 and back plate 98 from the front plate opening to the ends of the flaring wall 89 and is adjusted by the rods 99. The burner deflector 100 is mounted on the oil pipe sleeve 87 and may be operated by the same rods if desirable. In natural draft the air enters through the frame and if a plate valve 97 is drawn outwardly this air may continue on its course to the furnace. In case of forced draft the valve 97a is moved in and the valve 95 moved out- Wardly.

It must be understood that the variations herein specified may be used and so rearranged and constructed as to make quite a change in the front without departing from the spirit of the invention and the elements as protected are clearly set forth in the claims for novelty following.

That I claim is l. In furnace fronts, a front plate and a back plate distanced'by intermediate walls and having openings to and from the air pocket formed therebetween, a plurality of vanes arranged between plate rings in fan form, one of said rings being offset to form an annular defleeting wall, an outer annular wall terminating in a flange secured to the back plate, a cover plate standing out beyond the opening in the front plate, an oil pipe sleeve and burner supported by said cover plate and a plate valve operating on said4 sleeve to and from said offset sleeve. j

2. In furnace fronts, a front plate'and a back plate distanced by intermediate walls and having openings into and from the air pocket therebetween, a plurality of vanes eX- tending from front plate to bacK plate and tapering at their inner portions, an annular wall surrounding said inner tapered portions,

a cover plate standing out beyond the front opening and of greater diameter, an oil pipe vback plate distanced by intermediate walls and having a series of openings and a central opening into the air pocket between said plates and a flame opening therefrom, a cover plate standing out from said opening, a plurality of vanes supporting said cover plate from said front plate and forming a ring of air passages between said cover and front plates, a plurality of vanes tapering at their inner portions, located between said front and back plates and forming a ring of air passages surrounding the space between the .central and flame openings, an oil pipe sleeve and burner supported by said cover plate, and a sliding plate valve on said sleeve.

4. In furnace fronts, a front plate and a back plate distanced by intermediate walls and having a plurality of openings into the air pocket therebetween and a flame openi ing therefrom, an annular aring, wall terminating in a flange secured to the back plate, vanes extending outwardly from said annular wall beyond the front plate and arranged successively around the space between the main front and back openings, plate rings encircling said vanes on the outer and inner edges, both of said rings projecting beyond the front plate and one beyond the other, a cover plate rigidly secured to the shorter of said rings and having ports therethrough, an oil pipe sleeve and burner supported by said cover plate, and a double plate valve closing the outer ports and centre po-rts and slidl in on the inner ring.

igned at the city of New York, N. Y., U. S. A., this 9 day of July, 1920.

JOHN REID. 

